Jon, it's not a bad idea to Google with "Lissajous figure" Oscilloscope This is "must read" topic for Oscilloscope users. Get somewhere XTAL+oven based generator and you'll measure AC frequency with your scope with up to 0.00000001 precision. Good Luck, Mike. > > > Sorry, that's me who got restricted to be not free to > >> comment this kind of statements (perhaps > > > due to I live in "wrong" i.e. "uncivilized" from > > >someone's point of view part of the world). > > > > I don't understand what you're saying ?!? Lucky you are. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu